606 MR. R. E. TURNER ON 



I am inclined to think that this difference may prove to be 

 sexual, but do not think it would be justifiable to sink fusci- 

 pennis as a synonym until more material is available. 

 Hab. Victoria (^French), 



27. PiSON FUSCIPENNIS Sm. 



Pison fuscipennis Sm. Trans. Ent. Soc. London, p. 294 (1869), $ . 

 This is distinguished from sjiinolcE and other related species by 

 the even puncturation of the second ventral segment. 

 Hah. Champion Bay, "W.A. {Du Boulay). 



28. Pison strenuum, sp. n. 



$. Nigra; tegulis apiee testaceis ; segmentis dorsalibus 1-4 

 fascia apicali albo-pilosa ; alls sordide hj'alinis, apice leviter in- 

 fuscatis, venis nigris. 



Long., $ 11-12 mm., S 9-10 mm. 



5 . Clypeus closely punctured, twice as broad as long, rounded 

 at the apex and produced in the middle into a blunt smooth 

 process ; clothed with sparse silver pubescence, which also extends 

 as high as the base of the antennae. Second joint of the flagellum 

 scarcely longer than the third. Posterior ocelli about equi- 

 distant from each other and from the eyes, separated from the 

 eyes by a distance about equal to their own diameter ; the dis- 

 tance separating the eyes on the clypeus nearly twice as great 

 as that separating them on the vertex. Head and thorax very 

 closely and minutely 'punctured. Median segment very closely 

 and minutely punctured, with exti'emely short oblique striae 

 along the basal margin ; the median sulcus distinct, without a 

 carina, the surface of the posterior slope transversely striated, 

 with a strong median sulcus. Dorsal surface of the abdomen 

 microscopically punctured, the segments not constricted ; second 

 ventral segment very closely, evenly, and finely punctured. 

 Second abscissa pf the radius rather variable in length, in the 

 type as long as the petiole of the second cubital cell, but usually 

 shorter ; recurrent nervures interstitial with the transverse 

 cubital nervures, the first sometimes received just beyond the 

 base by the second cubital cell ; transverse median nervure inter- 

 stitial with the basal. 



Hah. Yallingup, S.W. Australia ( ^Tw^'ner), October to December; 

 South Perth, W.A. {H. M. Giles), January. 



The male has the clypeus produced into a spine, the second 

 joint of the flagellum distinctly longer than the third, and the 

 eyes on the vertex further apart, only one and a half times as far 

 apart on the clypeus as on the vertex. 



The species is smaller than peri^lexiis ov fuscipennis, and has 

 the second joint of the flagellum much shorter ; the clypeus is 

 much more produced at the apex in both sexes, and there is no 

 fascia of white pubescence on the fifth dorsal segment, which 

 fascia is present va fuscipennis. 



